Title of Exam: 642-452 Implementing Cisco Voice Gateways and Gatekeepers (GWGK)

Who is the vendor for 642-452?

CISCO

When completing 642-452 you would have earned credit towards : Cisco Certified Voice Professional also known as (CCVP)

642-452 Exam Description

The 642-452 Cisco IP Telephony (GWGK) exam is the only exam required to achieve a CCVP (Cisco Certified Voice Professional) certification.

What are the fields covered by 642-452?

The 642-452 Implementing Cisco Voice Gateways and Gatekeepers (GWGK) examination covers three broad areas which are discussed in detail below:

Exam area 1 Explain the function and interoperation of Gateways within a converged network

Compare and contrast the different protocols used on the Gateways, and the appropriate application of each protocol

Explain the differences between the various Digital and Analog line protocols

Describe and explain QSIG and its implementation

Describe and explain drop and insert multiplexing features

Exam area 2. Configure and implement DSP resources to support specified requirements

Explain the capabilities and functions of a DSP resources

Configure a DSP resources to support transcoding

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Exam area 3. Explain the function and interoperation of Gatekeepers within a converged network

Explain the function of Gatekeepers

Explain the interoperation of a Gatekeeper and the call agent

Describe and explain the Gatekeeper transaction message protocol and it's usages

Exam area 4 Determine the relevant technical and business needs that effect the choice of Gateway features, protocols and placement

Select the correct placement of the Gateway within a given network topology to meet stated requirements

Given different Telco and PBX system offerings, determine which Gateway services can be supported

Select the correct protocol to support the required features (Fax relay, modem relay, pass-though, survivability, caller-ID, caller name display)

Exam area 5 Determine the relevant technical and business needs that effect the choice of Gatekeeper features and placement

Select the correct placement of the Gatekeeper within a given network topology to meet stated requirements

Select the appropriate Gatekeeper functionality given stated business and technical requirements. (call admission control, dial-plan resolution)

Exam area 6 Configure and implement a Gateway to interface with the PSTN

Configure PRI connectivity (switch type, signaling)

Configure BRI connectivity (switch type, signaling)

Configure CAS connectivity ( feature group B and D, E1 R2)

Configure Analog connectivity (loop and ground start, FXO, DID, FXS)

Configure drop-and-insert feature

Verify and troubleshoot configurations

Exam area 7 Configure and implement a Gateway to interface with a PBX and voice mail system

Configure analog connectivity (FXO, FXS, E&M types 1-4)

Configure PRI connectivity (switch type, Qsig, signaling)

Configure BRI connectivity (switch type, signaling)

Configure CAS connectivity ( feature group B and D, E1 R2)

Configure additional voicemail connectivity features (DTMF 4th column, etc)

Configure IP circuit emulation feature

Verify and troubleshoot configurations

Exam area 8 Design and deploy a dial-plan to meet specific requirements

Configure digit manipulation. (translation rules, number expansion)

Design call routing scheme to meet technical and business requirements

Configure alternate call routing. Based on resource availability or cost

Implement and configure COR to meet business requirements

Configure Gateway to use Gatekeeper for call resolution

Configure call agent to use Gatekeeper for call resolution

Verify and troubleshoot configurations

Exam area 9 Implement extended services on the Gateway including Auto Attendant and Accounting/Billing

Download TCL scripts

Configure Auto Attendant using TCL scripts

Describe TCL usages (Billing, Radius, AAA)

Exam area 10 Design and deploy redundant Gateway configurations to provide high availability

Implement SRST on the Gateway

Describe necessary physical connectivity requirements to support redundant gateways

Exam area 11 Design and deploy redundant Gatekeeper configurations to provide high availability

Configure HSRP between Gatekeeper devices

Configure Gatekeeper clustering

Exam area 12 Configure and implement Gateways and Gatekeepers within a managed services or service provider environment

Determine when an IP-IP Gateway is necessary to meet technical and business requirements

Configure IP-IP Gateways

Describe and explain when the OSP protocol is necessary to meet technical requirements

Contrast the Enterprise and Service Provider environments

Difficulty rating : this examination rates 2 on a scale of 1 - 5 difficulty rating.

How long do I have to complete 642-452?

90 minutes

How many questions will I be required to answer?

55 and 65 questions

How much will 642-452 cost?

115 USD - Contact the Examination Test Centre directly for information regarding course availability, registration information and cost. Remember that costs may vary from vendor to vendor and from examination to examination.

642-452 Study Tips:

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